Tension device



A. HER-MANNS.

TENSIONv DEVICE.

APPLICATION FILED 001'. 9. 1919.

1,365,783. Patented Jan. 18, 1921.

WITNESS IN l/E N TOR W M \excmcler ermcm'nq A TTORNEY UNITED STATESPATENT OFFICE.

TENSION DEVICE.

s ecification of Letters ratent. Patented J an. 18, 1921.

Application filed October a, 1910. serial'lio. 329,508.

To all whom it may concern:

Be it known that I, ALEXANDER Han- MANNS a citizen of the United statesresiding at Iaterson, in the county of Passalc and State of New Jersey,have invented certain new and useful Improvements in Tens on Devices, ofwhich the following is a speclfication.

In a well known type of tension device for loom shuttles of the class inwhich the tension members have alternatin three guides and one ispivoted and normal y sprln -hel d away from the other, the pivoted memer 1s formed of wire and has its guides or eyelets produced by formingloops 1n the wlre at 1ntervals and giving each loop a half-twist toclose the eyelet produced. On account of the thread undergoing a sharpbend where in reachin from the fixed member to the pivoted mem r andback again it extends around the wire of each eyelet the thread becomesbadly abraded, especially at the instant when the pivoted member isfully back and the angle is most acute,.and there 1s a whipping of thefibers around the wires which soon results in the tension devicebecoming clogged with lint, and in addition there is an undue disparitybetween the tension when the movable member is fully back and when it isat the relatively opposite limit, due to the sharp angle referred to;besides, there is a crevice left where the halftwist forms a crossing ofthe wire in which the thread will catch unless, according to custom, thecrevice is filled with solder.

In another well known type of tension device of the class mentioned themovable member is a simple helix. This movable member also causes thethread to'assume a sharp bend around the wire formin each .coil oreyelet thereof, and it has the urther objection that on account of thefact that every eyelet-forming part thereof is as to its whole extent ahelix the movement of the movable member under the pull of the thread isunduly limited by contact of the helical eyelets with the cross pinsforming the fixed member of the device.

The object of this invention is to provide a pivoted member for atension device of the kind referred to whose eyelets will offer broadsurfaces to the thread, thus to prevent abrading the latter and reducethe whipping of the fibers around the material of the eyelets and insurea more even tension, and which eyelets will be so connected with eachother that said member may have the maxnnum amount of movement towardthe complementary or fixed member.

In the accompanying drawing, 4

Figure 1 is a plan View of a fragment of a shuttle having the improvedtension device, the top wall of the shuttle being broken away to showthe tension device, and

Figs. 2 and 3 are side views of the pivoted member of the tensiondevice.

The shuttle a has the usual cavities b and c for the quill and thetension device, respectively, with a thread guide at connecting thecavities. In the cavity 0 is arranged the line of pins 6 which form thefixed member of the tension device. f designates the pivoted memberwhich is fulcrumed on the pin 9 and is held normally withdrawn from thefixed member by the elastic device It, the

thread being adapted to extend as shown from the ide d in alternateengagement with the pins e and the guides or eyelets of the member f,now to be described in detail.

To form the pivoted member f, a suitable length of wire is used and oneend portion is bent to produce a coil 2' and a projecting arm j to whichthe device It is adapted to be attached, the coil forming the bearing ofthe member 7 and being adapted to be penetrated by the pin 9.

The remainder of the wire is formed at regular intervals with helices 7sand alter-' nating therewith with elongated connectors Z which arearranged to extend all in substantial coincidence with the centraltransverse axis of the coil i; viewing the member f in plan (Fig. 1) theseries of alternating connectors and helices is at right angles to thearm j, and the series of helices project outward from the series ofconnectors, which as a series and as to the whole length of eachconnector lie in substantially the same plane.

Each helix It includes at least two coils, in consequence of which thespace or crevice that would otherwise exist, unless it were filled withsolder or equivalent, between the ends of two adjoining connectors Z isclosed by the part m of the helix.

When the device f is in operative position in the shuttle as shown inFig. 1, the thread A being engaged with the eyelets formed by thehelices 7c and with the pins e in the manner shown, the thread not onlyhas broad contact at each point where it engages the member f, so thatthe abrading I thereof and the whipping oil of projecting eliminated.

The eyelets k are arranged slightly oblique to a line perpendicular tothe axis of coil 2' (see Figs. 2 and 3), that is, they are slightly outof parallelism with the pins 'e which are arranged as usual inparallelism to pin g on which coil 6 has its bearing, This has theeflect of causing the taut thread as the member f is drawn away from theobserver in Fig. l to shift slightly over thesurface of the inside ofeach eyelet, thus distributing -the wear, which in ordinary eyelets,coming always at one point, soon forms a nick therein, especially sincesuch eyelets represent only a single thickness of the w1re.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is '1. A pivoted member for a tension de-'vice of the kind herein set forth consisting of a strip of Wire bent toform a series of elongated connectors all extending 1n substantially thesame line and eyelets upstanding relatively to and alternating with saidseries of connectors, each eyelet being arranged transversely to theseries of connectors and being a pluri-coiled helix the respective endsof which project outwardly from the helix-and merge into the connectorsnext adjoining it on both sides thereof.

2. A pivoted member for a tension device of the kind herein set forthconsisting of a strip of wire bent to form a series of clongatedconnectors all lying as to the full length of each in substantially thesame plane and 'alined eyelets upstanding relatively to and alternatingwith said series of connectors, each eyelet being arranged transverselyto the series of connectors and being a pluri-coiled helix therespective ends of which project outwardly from the helix and merge intothe connectors next adjoining it on both sides thereof.

3. A pivoted member for a tension de vice of the kind herein set forthconsisting of a strip of wire bent to form a series of substantiallyalined'connectors and eyelets upstanding relatively to and alternatingwith said series of connectors, each eyelet being arranged transverselybut oblique with respect to the series of connectors and being apluri-coiled helix the respective ends of which project outwardly fromthe helix and merge into the connectors next adjoining it on both sidesthereof.

n testimony whereof I afiix my signature.

ALEXANDER HERMANNS.

